code: def setUp(self):
      self.element = Element([], kdims=["A", "B"], vdims=["C"])
  
file_path: holoviews/holoviews/tests/core/test_element.py
imports: from holoviews.core import Dimension, Element
  from holoviews.element.comparison import ComparisonTestCase
label_desc: Use image node_id 1 for calling the ElementTests obj's underlying member method code with example usage: obj.setUp() without return types